The erosion–corrosion (EC) and pure erosion of commercially pure titanium have been investigated in a 3.5% sodium chloride solution containing 10, 30, and 60 g/l SiO2 particles with an average size of 318 μm. The tests were performed at impact velocities of 4, 6, and 9 m/s under two impact angles of 40 deg and 90 deg. Polarization technique was used to study corrosion behavior of the material during erosion–corrosion. The eroded surfaces were examined by a scanning electron microscope (SEM) and a surface profilometer. The pure erosion, corrosion, and erosion–corrosion rates increased as impact velocity and sand concentration increased. The corrosion rates of the eroding surfaces under a normal impact were lower than those at an impact angle of 40 deg. The S/T ratio, i.e., the ratio of synergy to erosion–corrosion rates was about 80% at an impact velocity of 4 m/s, which indicated the high effect of the electrochemical corrosion on the degradation of CP-Ti at low velocity. The S/T ratio decreased to 30% and 15% at the impact velocities of 6 and 9 m/s, respectively. The S/T ratio was also decreased with increasing sand concentration indicating a greater role of mechanical degradation upon the erosion–corrosion rate in the concentrated slurries.
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November 2018
Research-Article
Study of Erosion–Corrosion and Corrosion Behavior of Commercially Pure-Ti During Slurry Erosion
N. Khayatan,
N. Khayatan
School of Metallurgy and Materials Engineering,
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: negar.khayatan@ut.ac.ir
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: negar.khayatan@ut.ac.ir
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H. M. Ghasemi,
H. M. Ghasemi
School of Metallurgy and Materials Engineering,
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: hghasemi@ut.ac.ir
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: hghasemi@ut.ac.ir
Search for other works by this author on:
M. Abedini
M. Abedini
Department of Metallurgy and
Materials Engineering,
Faculty of Engineering,
University of Kashan,
Kashan 87317-53153, Iran
e-mail: mabedini@kashanu.ac.ir
Materials Engineering,
Faculty of Engineering,
University of Kashan,
Kashan 87317-53153, Iran
e-mail: mabedini@kashanu.ac.ir
Search for other works by this author on:
N. Khayatan
School of Metallurgy and Materials Engineering,
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: negar.khayatan@ut.ac.ir
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: negar.khayatan@ut.ac.ir
H. M. Ghasemi
School of Metallurgy and Materials Engineering,
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: hghasemi@ut.ac.ir
College of Engineering,
University of Tehran,
Tehran 14399-57131, Iran
e-mail: hghasemi@ut.ac.ir
M. Abedini
Department of Metallurgy and
Materials Engineering,
Faculty of Engineering,
University of Kashan,
Kashan 87317-53153, Iran
e-mail: mabedini@kashanu.ac.ir
Materials Engineering,
Faculty of Engineering,
University of Kashan,
Kashan 87317-53153, Iran
e-mail: mabedini@kashanu.ac.ir
1Corresponding author.
Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received December 18, 2017; final manuscript received April 23, 2018; published online June 13, 2018. Assoc. Editor: Xiaolei Wang.
J. Tribol. Nov 2018, 140(6): 061609 (9 pages)
Published Online: June 13, 2018
Article history
Received:
December 18, 2017
Revised:
April 23, 2018
Citation
Khayatan, N., Ghasemi, H. M., and Abedini, M. (June 13, 2018). "Study of Erosion–Corrosion and Corrosion Behavior of Commercially Pure-Ti During Slurry Erosion." ASME. J. Tribol. November 2018; 140(6): 061609. https://doi.org/10.1115/1.4040156
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